19393991

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{257}}^1$

素因数の和:490

約数の個数: 16

約数和(自身を含む): 21622464

約数和(自身を除く): 2228473

約数列:

[1, 17, 23, 193, 257, 391, 3281, 4369, 4439, 5911, 49601, 75463, 100487, 843217, 1140823, 19393991]

約数ペア:

[(1, 19393991), (17, 1140823), (23, 843217), (193, 100487), (257, 75463), (391, 49601), (3281, 5911), (4369, 4439)]